<?xml version="1.0" encoding="utf-8"?>
 <grammar xmlns="http://relaxng.org/ns/structure/1.0">
   <define name="born-element">
    <element name="born">
     <text/>
    </element>
   </define>
   <define name="dead-element">
    <element name="dead">
     <text/>
    </element>
   </define>
   <define name="isbn-element">
    <element name="isbn">
     <text/>
    </element>
   </define>
   <define name="name-element">
    <element name="name">
     <text/>
    </element>
   </define>
   <define name="qualification-element">
    <element name="qualification">
     <text/>
    </element>
   </define>
   <define name="title-element">
    <element name="title">
     <attribute name="xml:lang"/>
     <text/>
    </element>
   </define>
  </grammar>
